Stovepipe-lock.



R. B. MANNON.

STOVEPIPE LOCK.

APPLlCATlON FILED DEC. 14. 1911.

1,278,704. Patented Sept. 10,1918.

noY BLAND MANNON, or LONDON MILLS, ILLINOIS.

STOVEPIIE'E-LOCK.

Specification of Letters Patent.

Patented Sept. 10, 1918.

Application filed December 14, 1917. Serial No. 207,160.

To all whom it may concern:

Be it known that I, ROY B. MANNON, a citizen of the United States,residing at London Mills, in the county of Fulton and State of Illinois,have invented new and useful Improvements in Stovepipe-Locks, of whichthe following is a specification.

This invention relates to stove pipe locks and it consists in the novelfeatures hereinafter described and claimed.

An object of the invention is to provide a lock of simple and durableform having means for engaging the thimble of a chimney flue whereby thesaid parts are securely held together. The lock is further provided withmeans for attachment with a stove pipe section in a manner to securelyhold the same and prevent the escape of smoke or gases.

In the accompanying drawings Figure 1 is a side view of the lock;

Fig. 2 is a perspective view of a thimble used in the lock.

Fig. 3 is a similar view of a sleeve used in the lock.

Fig. 4: is a similar'view of an end portion of a pipe used in the lock.

As illustrated in the accompanying drawing, the thimble 1 is adapted tobe secured in the flue of a chimney in a usual manner. The said thimbleis provided at its sides with slots 2.

A sleeve 3 is adapted to be inserted in the thimble 1 and the saidsleeve 3 is provided at its sides with catches a which are adapted toengage in the slots 2 of the thimble l. The said catches are composed offlexible strips 5 which are secured at one end to the inner surface ofthe sleeve 3 and the said strips 5 carry pins 6 which pass through thesides of the sleeve 3 and are adapted to engage in the slots 2 of thethimble 1. The sleeve 3 is provided at a point between its ends with anannular ridge 7 which is formed thereon preferably by pressing thematerial of which the sleeve 3 is composed. An annular flange 8 isattached to the outer end of the sleeve 3 by means of rivets or othersuitable securing devices. Between the flange S and the ridge 7 thesleeve 3 is provided with a series of longitudinally disposed parallelslits 9 which form strips.

Copies of this patent may be obtained for five cents each, by addressingthe The strips formed by the slits 9 are flexible and their outer endportions are angularly disposed and spaced from each other. The flange 8is secured to the angularly disposed portions of the strips and bridgesthe spaces between them.

A stovepipe section 10 is adapted to be connected with the sleeve 3 andthe'said section is provided in the vicinity of one end with an annularridge 11 which is formed thereon by means of pressing the material ofwhich the said stovepipe section is composed. After the sleeve 3 hasbeen inserted in the thimble 1 the pipe section 10 is connected with thesaid sleeve by inserting one end of the said pipe section in the sleevewhereby the ridge 11 may engage in and nest in the ridge 7 of the sleeve3. As the ridge 11 is being inserted in the sleeve 3 it may move alongthe slits 9 whereby the slitted portion of the said sleeve is expandeduntil the ridge 11 engages in the ridge 7 when the sleeve 3 may contractand hence the parts are securely held together. After the parts havebeen assembled the flange 8 engages the end of the thimble 1 andprevents the escape of gas or smoke.

From the foregoing description taken in conjunction with theaccompanying drawing, it will be seen that a stovepipe lock of simpleand durable structure is provided, and that the parts of the device maysecurely I engage each other and prevent the escape of gases or smoke.

Having described the invention what is claimed is In combination with athimble provided at its sides with slots, a sleeve insertible in thethimble and having clutch devices adapted to engage in said slots, thesleeve being provided at points between its ends with an annular ridge,and formed with strips extending from the ridge to one end of the sleeveand spaced from each other at their outer end, a flange secured to thestrips and bridging the spaces between the ends of same and a pipesection insertible in the sleeve and having an annular ridge adapted toengage in the ridge of the sleeve,

In testimony whereof I affix my signature.

,ROY BLAND MANNON.

Commissioner of Patents,

Washington, I). 0.

